Abstract
view Abstract Citations (32) References (13) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Period Derivative of the Millisecond Pulsar in Globular Cluster M28 Foster, R. S. ; Backer, D. C. ; Taylor, J. H. ; Goss, W. M. Abstract The period derivative of the recently discovered 3-ms pulsar PSR 1821-24 (Lynn et al., 1987) located near the center of globular cluster M28 has been measured. While the observed slow-down rate, 1.6 x 10 to the -18th s/s, is somewhat larger than expected, it is still consistent with models of ms-pulsar evolution that involve spin-up during mass accretion from an orbiting companion star. It is possible that a substantial fraction of the observed period derivative could be the result of a gravitational encounter with a neighboring star in the cluster core. The probability of observing such an event is rather small, however. Timing residuals have so far placed constraints on the possibility of PSR 1821-24 being in a wide binary system. Publication: The Astrophysical Journal Pub Date: March 1988 DOI: 10.1086/185113 Bibcode: 1988ApJ...326L..13F Keywords: Astrometry; Globular Clusters; Pulsars; Gravitational Effects; Stellar Mass Accretion; Very Large Array (Vla); Astrophysics; ASTROMETRY; CLUSTERS: GLOBULAR; PULSARS full text sources ADS | data products SIMBAD (3)
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